Typewriter



Jun@ 28, 1932T o'. A. HoKANsoN ET AL TYPEWRITER Filed Jan. 4. 1929 5Sheets-Sheet l june 28, 1932..v o, HOKANSQN ET AL ,86,594

TYPEWRITER 'Filed Jan. 4. 1929 3 sheets-sneu 2 Y lu;

O. A, HOKANSON ET AL TYPEWRITER 3 Sheets-Sheet 3 Filed Jan. 4. 1929 lll.In

' Patented -June 28, 1932 UNITED STATE-s PATENT GFF-ICE l TTO A.HOKAJISISON AND JAMES F. XC, OF'WOODSTOCLIIJJN-OIS, .ASSIGNORS T0,WOODBTOCK TYPEWRITEB, COIPANY,.0F WOODSTCX,

. .ILLINoIs ILLINoIs, .a conoaarIoN or 'rYrEwnrrEa i Application inedJanuary 4,- 1929. serial no. 330,201.

This invention relates to typewriter mechanism in which the impressionribbon 4is 'moved to a positiongover the printing pointv at the platen-at each stroke of a type bar, and one of the objects of the inventionis the provision of new and improved means by which thethrow of theribbon may be varied and brought to rest inthe desired positions withaccuracy and without overthrow. f

Y lo' Another object of thel invention is the pro? .4 vision of meansfor varying the setting of More particularly it is the object of theApresent invention to provide improved-and eilicient mechanism forthrowing the ribbon to different color positions without overthrow sothat when one color'of ribbon, lsuch as black, is to be used, none ofthe other color, .such as'red, will appear on .the typewritin produced.Y Other objects of the invention will appear hereinafter, the novelfeatures and combinations being set forth in the appended claims.

In the accompanying drawingsv Fig. 1 is a sectional elevation of atypewriter embodying our invention and adapted to electrically operatedtype bar mechanism; Fig. 2 is a rear elevation of the line finder andribbon carrier, together with the stop mechanism for limiting the throwof the ribbon vibrator;

Fig. 3 is a fragmentary view showing a side elevation of a portion ofthe structure -shown in Fig. 2;

Fig. 4 is' a sectional elevation of a portion of a typewriterillustrating our invention apthe impression of the =t plied to-manuallyoperated type bar mechfrom the lfront of the machine instead of from-the' rear thereof as in Fig. 2.

In typewriters having-a front keyboard it -isycustomary to provideribbon vibrator mechanism actuated b the type bars. for moving theribbon over t e printing point to receive at the time` the type strikesthe platen, the-"ribbon being withdrawn downward after' each impressionto permit easy visibility of the matter typewritten. It is common toemploy a two colorv ribbon, such as black and red, and to provide meansfor shifting either horizontal `zone'v cf the ribbon of one color or theotherover the printing pgint offt e platen so that the writing may ineithe one of the two colors, as desired. It is also desirable to pre-.vent the ribbon from being moved upwardly at all when atype bar isoperated so that the; A ribbon will not-be'moved to the printing pointand so that stencils may be cut 'The present invention provides or theaccomplishment of all of these results in connection with manuallyoperated typewriters, as well as in connection with electricallyoperated typewriters, with the assurance that there willnot be anyoverlapping ofthe colv ors in the' horizontal zones of the' ribbon 16havin type vbars 17 pivoted thereto is supporte on the frame 15. Anarcuate universal bar 18j lies in the pathof the type bars 17 i and isoperated thereby in 'the manner similar to that shown in Patent No. 1,276,118,

, granted August'QO, 1918. Upon the opera- `tion of an type bar 17 onthe pivot 19 the universal ar 18 is thrustrearwardlyfto bythe type.

0 era-te the escapement mechanism in aweillmown manner.

At the upper back'portion-of'the frame i of the typewriter is mounted a'rock shaft f 2o. This rock shaft 2 0 carries a forwardly extending arm21 and infront of the arm 2-1 so as to move up' and down with the latterwhen `the shaft 2O is rocked, is a platen carriage shift rail 22extending across the machine frame.

-A carriage frame 23 ismounted between.'

the' rails`24 and 25 which are fixed to the fra-me of the machine. Aplaten carriage 26 is mounted on links 27, 28 which permit the verticalmovement of the platen 29 for Case shift. A roller 30 runs on the rail22 by means of which the platen is lifted when the I its upper position.

vrock shaft 20 is oscillated by the shift key.

The shift key, not shown, has connection with f Depending.from the arm21 is a bracket 31 to the lower end of which is pivoted a link 32extending upwardly and at an angle and pivoted at l33 to the bell crank34 which is connectedto the line finder 35. The bell crank 34 is pivotedat 36 to the bracket arm 37 that' is secured rigidly to the typewriterframe. The line finder is suitably guided to move vertically in front ofthe machine frame member 38 and back to the segment 16.' The line findertension spring 39 is connected between the lower end of. the line finderand the bracket 40 which is fixed to the frame 38. This spring 39 is forthe purpose of holding the upper edge of the line finder in yieldingengagement with the platen.

Also depending from the arm 2l, as shown in Fig. 1, is another bracketarm 42 to which is pivoted at 43 the ribbon vibrator 44 which has apin`.` and slot connection at 45 to the lower end of the ribbon holder46 which is' guided in a frame fixed to the segment 16 in a plane infront of the planeof the line finder.

The Weight of the platenand the parts associated therewith act on theroller 30 and thence on the rail 22 to hold the arm 21 in its lowerposition and. therefore also the line finder and the ribbon vibrator, asshown in full. line in F ig. 1. When the shift key is depressed and theguide rail 22 elevated by rocking the shaft 20 the ribbon vibrator 44-.and the ribbon holder 46'will be elevated because of the forwardmovement of the bracket arm' 42. It should be understood, however, thatthe ribbon vibrator bail 44 is pivoted at 43 to the bracket arm 42 andnot fixed thereto for reasons which will be hereinafter explained. Also,when the shift key is depressed and the guide rail 22 elevated the arm31 will be moved forward or toward the keyboard of the typwriter whichwill result in movement of the adjustable link 32 forward and themovement of the bell crank 34 on the pivot v36 so as to elevate the linefinder 'i in accordance with' the shifting of the platen to its upperposition. While the line nder always ocupiesa fixed .relativepositionwith the platen according to itsadJustment, the ribbon :vibratonoperates independently .of

'lthel'ine linderandis shiftable to various posi- .'.tions according towhether one color or another. of the ribbonis desired for'thetypelwriting to beaccomplished, or whether the typewriterribbonis to.'beuheld'out of the 'l In order that the' upper movement of the ribbonmay always be arrested or stopped at the same definite position relativeto the printingline, the `stop plate 47' (Fig. 2) is path .ofn the` typeso" that' stencilin'g may be mounted on'the support for the line iinderso asto move up `and down with thelatter.

`This support comprises a plate 48 having arms 49 extending upwardlytherefrom. i The line'lin'der 35 has an upper-.horizontal edge 50 forindicating the line position and is provided with an opening 51 forreceiving the type bars. An inverted U-shaped portion 5'2 bridges theupper part of the opening 51 to assist in holding the paper inl positionat the printing point.

The stop plate 47 is mounted to slide in a direction parallel to theline finder edge 50 and is permitted to have such sliding movement byreason of the pin and slot connections at 53, 53. The stop plate 47 isprovided with. two horizontal stop edges 54 and 55 at differentelevations, as shown in Fig. 2, so as toaarrest the ribbon either forblack or` for -re `Mounted on the under side of thel frontof the topplate 15, as shown in Fig. 1, is a ribbonl shift lever bracket 56 towhich is pivoted at '57 a bell crank 58 having at its outer end theribbon shift lever knob 59. By moving the knob 59 over the arcuatesurface of the bracket 56 the ribbon shift lever may be set l toindicate either red, black, or stenciling.

Movement ofA the ribbon shift lever 58 moves the ribbon shift link 60which is connected to the bracket arm 61 on the rock shaft 62, as shownin Fig. 3. The rock shaft 62 is mounted in a bracket 63 which is rigidlySecured to the rear frame 15 of the typewriter. Also rigidly secured tothe rock shaft 62 so as to move therewith is a bracket arm 64, as shownin Fig. 3, tothe upper end of which is pivoted at 65 a link 66. Theother end of the link 66 is pivoted at 67 to the bell crank 68, theother arm of which/has an upstanding pin 69 which is engaged/by theslotted exi tension 70 which is secured to the stop plate 47. Fig. 3shows in elevation the connections foroperating the stop plate 47,whereas vations.

Downward movement of the ribbon vibrator is limited by the lever 1,11striking4 against the adjustable abutment screw 124, as shown in Fi 1,because as hereinafter more fully described, the bail 44 is connected bythe link 114. to the lever 111 which isfpiv'oted at 112 to the bracket122 rigidly connected to the frame of the machine. The initial positionof the ribbon vibrator may therefore be accurately adjusted by means ofthe abutment screw 124: It should be understood that the pin 74 which isfixed to the segment 16 projects into the slot 75 of the downwardextension 76 of the ribbon holder- 46 for the purpose of acting as avertical guide for the ribbon holder 46. As shown in Fig. 1, the

.frame 37, as shown in Fig.2. Tfhere is therefore a positive movement ofboth the line finder land the ribbon vibrator up and down in accordancewiththe up and down case shifting. The stop plate 47 being mounted onthe line finder 29 by reason ofthe pin and slot connections at 53, 53moves up and down with the line finder", but the stop plate extension 70remains connected to the upstanding pin 69 on the bell crank 68, theheight of the pin 69 being suilicient to always retainconnection betweenthe bell crank 68 and the stop plate 47 for the various heights of thelatter.

It should be particularly understood that i it is desirable to maintaina proper relation of the ribbon with the platen both when the platen isin its lower position and when it is in its upper, position. It is forthis reason that the stop plate 47 moves up and down with the linefinder so that the stop plate, as

' well as the line finder, may. always be in the same' relative positionto the platen. The ribbon-vibrator will then be stopped in its .upwardmovement in its desired* position relative to theplaten whetherthe caseshifting movement has been eiectedor not.

Referring to Fig'. 1 *showing a power ratchet roller' 77 of an electrictypewriter, it

" will be seen that when the key lever 7 Sis de lever 81 will be broughtinto engagement with vthe power roller 7 and then be disengagedtherefrom 'by striking the abutment 82. While the operating lever 81 isin engagement with the ower roller 77 a. forward pull Will be exertedJ82 with the sub-lever 83, the lower end of which is connected at 84 tothe machine frame 85 and the upperdend of which has a pin and on thepivoted connection'at slot connection at 86 with the type bar 17 lowerportion of the typewriter frame and is provided with a restoring spring93, as

shown in Fig. 1.

The arms 89 are connected to a rock shaft 94, the ends of which arepivoted as illustrat- At the central rtion ofthe rock shaft 94 is anupstanding racket arm 95, the upper end of which has a screw and slotconnection' at 96S with the bell crank lever 97. This bell crank .lever97 is pivoted at 98 to the lower portion of the arm 95. A spring 99 iscon' nected between the upper'end of the lever 97 and the pin 100attached to the frame 101 of a typewriting machine. The screw and slotconnection 96` is for the pur ose of adjusting the position of the bellcrank 97 on the pivot 98 relative to the arm 95, but when in adjus'tedposition the bell crank 97 is rigidly connected to the arm and movestherewith and this arm 95 is in turn rigidly connected to the rocksha-ft 94 so as to move in unison with the arm 89. It will thus be seenthat when the actuating lever 81 is thrust forward by the power roller77 the hook lever 87 by engaging the bar ed at 90 in Fig. 1 to thema'ehine frame 91.

88 moves the arm 89 forward on the pivot 90 which is pivoted at 107 tothe lower end of the crank arm 108,v the latter being rigidly connectedto the rock shaft '62. By referring tov Fig. 3,;it .will be seen thatthefrock :shaft'62 also carries the cranks 61 and 64. Conseat 102 to thelower end of the link pivoted at 105 the link 106,'the rear end of pquently' when th shift lever 58'is moved up or down the link 60 willrocktheshaft 62 and Y therefore not only position the stop plate 47 but alsoswing the link 103 forwardly or `rearwardly on the pivot 102 to positionthe upper end portion 109 which isy provided with a slot of a specialconfiguration or contour to co-" operate 'withthejpin 110 which extendslaterally from one arirofthe bell crank 111 which4 b5on. By moving theknob 59 to its position Y is pivoted at 112 to the machine frame 101.The rear arm of the bell crank 111 is pivoted at 113 to the link 114,theI forward end'of which has a pivotal connection at 115 to the ribbonvibrator bail 44.

The slotted head 109 at the upper. end of the link 103 has in realitythreeslots 116, 117 and 118.. The ribbon stop shift lever 58 ma occupythree different positions correspon ing to the slots 116, 117 and 118and the movement of the knob 59 to the three different positions willset the slots 116, 117 and 118 correspondingly. For instance, the knob59 may be set for typewriting 0n the red zoney ofthe ribbon and theshaft 62 rocked to move the lever 103 forwardly to its forward limit,thus placing the slot 116 over the pin 110. By lacing the knob 59 in itsmid-position the shaft v62 may be rocked soas to move the slot 117 tothe position shown in full lines in Figs. 1 and 4 for the stencilingposition of the ribfor typewriting on the black zone of the ribbon theslot 118 may b e moved to its rear pof sition over the pin 110 so as topermit a limit'- ed movement of the latter. In other words,simultaneously with the shifting of the stop plate 47 by operating theknob 59, the lever v 103 may be moved arcuatel on its pivot 102 so as tovary the position o the slots 116, 117

Yand 118 relative to the pin 110. Y

It' can readily be seen that when the type- .writer key 78 is operatedto eiect forward movement of the arm 89 and downward movement of thelink 103 if the slot 117 is over the pin 110, as shown in full lines inFig. 1, the

i downward movement of the lever 103 will not be suflicient to engagethe pin 110 and therefore no movementof the bell crank 111 will takeplace on the rock shaft 107 andconsequently the link 114 will not bemoved fQrward andthe ribbon vibrator 46 will not be moved upwardly, butwill remain in its lower position so that stenciling may be done. Thisis true also for case shifting because of the bracket arm connections 42and 31 with the arm 21, as shown in Fig. 1. That is, although the ribbonvibrator moves up and down during case shifting, there will be nomovement of the ribbon vibrator relativel to the laten after the latterhas been shifte Therefbre the small letters will be stenciled whentheplaten is in its lower osition and capital letters will be stenciled wen the platen is in its other position, because in neither position canthe ribbon vibrator be operated because the slot 117 is so long as toprevent downward movementof thelink 103 from engaging thepin 110. l Y

If `the red zone on the ribbon is on the lower half of the ribbon itwill be desired to move the ribbon upwardly to a maximum extent and theknob 59 should therefore be moved s o that the slot 116 will be movedover the nin 110. This is done by rotating the down the pin 110 will'beimmediately shaft 62 in a' clockwise direction, as illuswhen the arm 2lis moved up or down the i ribbon vibrator is maintained in the .samerelative position to the platen and therefore the movement of ribbonvibrator eiected by the downward movement of thelinkv 103 is an addedmovement-of the ribbon to its position either in lower case or uppercase.

It will also be seen that when the knob 59 is -moved up torock theshaft. 62 in a clockwise direction to bring the slot 116 over the pin110the link 66 will be pulled to the right, as viewed in Fig. 3, and asshown` in Fig.5, this results in a pulling out of the s'top extension70, that is, the stop plate 47 will pulled to the left, as viewed inFig. 2, thereby bringing the stop edge 47 vinto the path of the p1n-7 3-which is shown in Figs. 1 and 2.

The stop pin 73 is connected to the ribbon vibrator lto -move up anddown therewith. In electric typewriters where kthe operation is veryquick when the-` type bars are actuated, it is particularly desirable tohave the stop ribbon. The ribbon ishould stop as to properly print thewhole type each time it is struck 'and the red should not overlap theublack. l.

- It should be particularly noted that both in the manual'operation andin the electrical operation, the upper edge of the slot 116 will edges54 and 55 prevent overthrow of the. i

engage the pin so as tosta'rt the upward movement ofthe ribbon holderjust as soon as the type bar is begun to be operated so as to assuremovement of the lower or red zone y red.

When lit is desired to lprint through the black zone of the typewriterribbon the knob 59 mayxbe moved to its lowermost limit to rock the shaft62 in an anti-clockwi'se-direction, thus pulling the upper end of thelink S1103 toward the right to bring the slot 118 over the pin 110.4Then when the type bar is operated ther'lnk 103 will have a certaindownward lost motion before the upper edge of the slot 118 engages thepin 110 to move the crank 111'on its pivot 112 and thereby eect forwardmovement of the link 114 and the swinging upwardly of the ribbonvibrator bail 44 on its pivot 4 3. The ribbon vibrator will therefore bemovedupwardly partially so as to bring the upper black zone of theribbon into proper position relative to the platen. This is true both asto the upper .case and lower case, because whatever the '-in Fi 3 willbe moved in an anti-clockwise directlon and therefore the link 66 willbe pushed toward the left which, as shown in Fig. 5, will efect apushing-in of the eiiten sion 70 `so'as to move the stop edge 55 towardthe right, as viewed in kFig. 2. The' stop edge 55 will therefore bebrought over the top of the pin 73 so as to limit the upward throw ofthe ribbon vibrator. t should be particularly understood that the stopedges 54 and 55 arearranged to be so located as not toprevent the fullmovement l of the ribbon that is desired by the setting orpositioning ofthe slots 116 and 118, but these stop edges are in position to preventany excess movement beyond the' desired throwof the ribbon so thatnotwithstanding the very rapid 4operation of electric typewriters theribbon will not be thrown up-'v wardly any farther than is desired.

manually operatedl typewriters, as shown in Fig. 4. The key lever 78 maybe connected as shown at 119 to the sub-lever 83 which is pivoted at 84to the machine frame 85. The rear end of thekey lever may be pivoted at92 tothe machineframe 91 and be provided with a restoring spring 93. At90 is pivoted to the machine frame 91 a rock shaft 94 which is securedto a bell crank 95- having a lateral clockwise direction. Pivoted at 98to the bell crank 95 is another bell crank97 whichhas is the positionfor stenciling.

a screw and slot adjusting connection at 96.

`When the lever 78 is depressed to engage the extension 120 the bellcrank 95will by reason of its connection at 96 and 98 act against thespring 99 to move down the forward extending arm of the bell crank 97which forward extending arm is pivotedfat 102 to the lower end of thelink 103.

Downward movement of the link 103 being thus secured by depressingmanuall any one of the key levers 78, the ribbon vi rater may beoperated to either the position represented by the slot 116 or theposition represented by the slotl 118, or when the slotv 117'is over thepin 110 the ribbon will not be y moved upwardlywhich, as" aboveexplained,

It should beunderstood that during the operation of the ribbon vibratorthere is no lost motion between the bell crank leverv 97 and the crankarm 95, the slot 96 being for the purpose of affording adjustment of thebell crank lever 97 relative to the crank arm 95. After such adjustmentis made the set screw 121 is tightened to hold the crank arm 97 rigidlyconnected to the arm 95 to move' therewith. Therefore when the arm 89moves, the rock shaft 94 and the bell crank 97 move therewith, beingrigidly connected to the arm 89. In other words, since the armv 89, rockshaft 94, arm 95 and bell crank 97 are rigidly connected together,forward movement of the universal bar 88 will immediately` impartdownward movement t0 the pivot 102 and therefore to the link 103.

`A retracting spring 122 is connected between the crank arm 111 and thebracket 123 which is connected rigidly to the machine frame. An'adjustable abutment or stop screw 124 is mounted on the bracket 123 inposition to engage the rear upper 'ed e of the rear arm of the bellcrank 111 to a just the ribbon to its initial position. The stop screw124 may be held in adjusted position by means of the nut 125. The spring122 therefore actsas' a restoring spring for the ribbon vibrator sothatimmediatel after the type of the actuating members 81 on the bar 88k Will ermit the s rin ,122 to return th rib- Our improvements are alsoapplicable to P P g e bon vibrator to its lower position. .The spring99` also acts upon therelease of the bar 88 to restore the lever89 toits initial position. When this occurs the in 110 will be engaged by the-bottom edge of) the slot in the'slctted head 109, thereby limiting theupward movement of the link 103 and the rearward movement of the arm`89,

It should be .understood that the part designated 88 is in reality auniversal bar in that it extends between bracket arms 89 atthe sides ofthe machine frame so that all of the actuating members 81, one for eachof the key levers 78, may hook over the universal bar 88 by means of theextensions 87. In the form shown in Fig. 4, the part designated 120 is auniversal bar extending between the brackets 95 at the sides of themachine frame so that depression of any of the key levers 78 will movedown the universal bar 120.

In the application of Otto A. Hokanson,

Serial No. 738,982, iled'September 22, 1924,

.now Patent No. 1,691,063, granted November soci'ating with the linefinder and ri bon vibrator simpler more eiicient mechanism for operatingthe ribbon vibrator to properly Ihas struck the platen the re ease ofthe pull so also the s ring position it for different color zon'es ofthe ribbon and for stenciling, when the printing is being done in uppercase and when it is being done in lower case, both in an electricallyoperated typewriter and in a manually operated typewriter.

Obviously those skilled in the art may make various changes inthedetails and arrangement of parts without departing from the spirit andscope of the invention as defined by the claims hereto appended and wewish therefore not to be restricted to the precise construction hereindisclosed.

Having thus fully disclosed an embodiment of our invention, what wedesire to secure by Letters Patent of the United States 1s:

1. In a typewriter, in combination with the frame of the machine aribbon vibrator, a universal bar, a lever a apted to be moved bythe-movement of the said universal bar, a relatively long link ada tedto be pivoted in one end of said. lever, sa1d link having an invertedT-shaped. slot in its upper end and having a laterally projecting armsubstantially intermediate its length, aleyer pivoted at one end to saidarm, a second lever pivoted to the opposite end of said lever, saidvsecond lever being pivotally mounted on a .rock

shaft, a platen-shifting member, a substantially cradle-shaped leverpivotally carried on said platen-shifting member, a bell crank leverpivotally mounted on the frame of the machine and having one arm thereofcarrying a pin lying in the inverted T-shaped slot of the link, theother arm ofthe bell crank lever being pivotally mounted to anadditional lever, said additional lever being pivotally mounted in turnto the cradle-shaped lever, and 'a ribbon vibrator connected to thecradle-shaped lever.

2. In a typwriter, in combination with the machine frame, a key leverhaving its rear end pivoted to the frame, a sub-lever foroperatin thetype bar, said sub-lever being pivote to the frame, a restoring spring-mounted on the frame and beneath the rear end of the key lever, a rockshaft pivoted to the frame, a lever pivoted to the rock shaft, a bellcrank pivotally mounted on said lever and havin an adjustable connectiontherewith, a lin pivoted to said bellcrank, said link having an invertedT-shaped slot at its upper end, a laten-shifting member, a ribbonvibrator ever pivotally carried by the platen-shifting member, .a ribbonvibrator connected to said ribbon vibrator lever, an upper bell crankivotally mounted on the frameof the inac ine and havin an arm carrying apin lyin in the slot o the link, the second arm of t e upper bell crankhav- 4ing a lever pivoted thereto, said lever being and for shifting therock shaft, whereby to,

actuate the link.

3. In an electric typewriter, the combination with a power roller, of akey lever, an actuating member, means operatedby said key lever forconnecting said actuating member to said power roller, a type bar, asublever connected to said actuating member and to said type b ar, ahooked extension for said actuating member, a universal bar engaged bysaid hooked extension, a ribbon vibrator, and means conected betweensaid universal bar and said ribbon vibrator for operating the latter.

4. In a typwriter, in combination with the machine frame, a key leverhaving its rear end pivoted to the frame, a sub lever conbrator leverpivotally carriedthereon, a rib- A' bon vibrator connected to saidribbon vibrator lever, a third bell crank pivotally connected to themachine, one arm of said third bell crank having a pin lying in the slotof said link, and the other arm of said third bell crank having a leverpivoted thereto, said lever being pivotally connected to the ribbonvibrator lever.`

5. In a typewriter, the combination with a key lever, of a type bar, asub-lever con'- nected to said type bar for actuating the same, anactuating member connected to said sub-lever, a power shaft, means forcon'necting said actuating member to said ower shaft upon the depressionof sai key lever, a hooked extension on said actuating member, auniversal bar engaged by said hooked .extension when said subleveractuates said type bar, a ribbon vibrator, and means connected betweensaid universal bar and said ribbon vibrator for operatin the latter inunison with the operation of t e type bar.

6. In a typewriter, the combination with bar, mechanism for oplever, ahooked extension from said operating means, a universal bar engaged bysaid hooked extension, a bell crank pivoted to the frame of the machineand having one arm supporting said universal bar, a ribbon vibrator, andmeans connected to said bell crank for operating said ribbon vibrator. y

8. ln a typewriter, the combination with a constantly rotating powershaft, of a key lever, an actuating member, means operated by said keylever for connecting said actuating member to said power shaft, a typebar, a sub-leverv connected to said actuating meinber and to said typebar, an extension for said actuating member, a ribbon vibrator, andmeans connected between said extension and said ribbon vibrator foroperating the latter.

9. In a typewriter, the combination with a key lever, of a type bar,mechanism for operating the type bar upon depression of the key lever,an extension from said operating mechanism, a universal bar engaged bysaid extension, a ribbon vibrator, and means comprising an oscillatingactuating member connected to said universal bar for operating saidribbon vibrator.

10. In a typewriter, the combination With a key lever, of a type bar,means for operating said type bar upon depression of said key lever, anextension from said operating means, a universal bar engaged by said eX-tension, a bell crank pivoted to the frame of the machine and havingmeans for supporting said universal bar, a ribbon vibrator, and meansconnected to said bell crank for operating said ribbon vibrator.

In testimony whereof we have signed our names to this speciiication onthis 31st day of December, A. D. 1928.

OTTO A. HOKANSON. JAMES F. KOCA.

